PLATE 125. 



CONCHARIDA. 



Diam. Page 



Fig. 1. Conchopsis aspidium, n, sp., , . . . x 150 1726 



Lateral view, from the left side. 



Fig. 2. Conchopsis aspidium, n. sp., .. , . . . x 300 1726 



The hinge of another specimen, in which the two valves are connected by 

 a ligament (as in figs. 8 and 9, PL 123). 



Fig. 3. Conchopsis orbicularis, n. sp., .. x 200 1725 



Lateral view, from the left side. 



Fig. 4. Conchopsis navicula, n. sp., , , , , x 150 1727 



Lateral view, from the right side. In the lower (posterior) half of the 

 figure is visible the central capsule with its dark nucleus, in the 

 upper (anterior) half the phseodium with two broad sagittal wings. 



Fig. 5. Conchopsis navicula, n. sp., . , .. . x 400 1727 



Three single pores with their hexagonal external frame and the dilated 

 internal ovate or ampullaceous channel. 



Fig. 6. Conchopsis navicula, m. sp., ., . » ., .. x 400 1727 



Hinge of the shell, from the right side. 



Fig. 7. Conchopsis compressa, n. sp. 5 . . x 150 1725 



Lateral view from the left side. The triangular central capsule with the 

 dark nucleus is visible. 



Fig. 8. Conchopsis compressa, n. sp.. ? . c . . x 150 1725 



Dorsal view of the upper valve with its keel. 



Fig. 9, Conchopsis pilidium, n. sp., . . . . x 80 1726 



The two valves separated and seen obliquely, half from the lateral, half 

 from the internal side. The inner opening of each valve is bordered 

 and partly closed by a broad horizontal velum or diaphragm like the 

 deck of a boat. 



